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| Research of Unified Power Quality Conditioner Engineering Experiment Device based on Modular Multilevel Converter |
| Yang Yongchun1,2, Xiao Xiangning2, Guo Shixiao1,2, Gao Yajing1,2, Zhang Bo1,2 |
1. Hebei Key Laboratory of Distributed Energy Storage and Micro-grid North China Electric Power University Baoding 071003 China;
2. State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China |
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Abstract The combination of modular multilevel converter (MMC) technology and unified power quality conditioner (UPQC) provides the possibility for UPQC to be used in high-voltage and large capacity applications, and also provides an intelligent idea for the centralized solution of power quality problems. The study on MMC-type UPQC has tremendous technical significance and market value. Firstly, the working principle of UPQC based on MMC is analyzed, and the key parameters are then studied and designed. In addition, corresponding control strategies are proposed for power quality compensation functions of UPQC parallel side and series side MMC converters. The simulation results under PSCAD/EMTDC verify the correctness of the parameter design and the effectiveness of the control strategy. Furthermore, a set of UPQC engineering experimental device based on MMC with the scale of 4MV·A/10kV is developed, the field experiment is carried out correspondingly. The experimental results show that MMC-type UPQC can achieve multiple power quality compensation.
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Received: 02 April 2018
Published: 03 September 2018
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2018, Vol. 33 
